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Subjects
Science CBSE
Class 7
Physical and chemical changes
Textbook questions
27.
NCERT Exemplar XII
Exercise condition:
4
m.
Classify the following processes into physical or chemical changes:
(i)
. Beating of aluminium metal to make aluminium foil.
Chemical change
State change
Physical change
No change
(ii)
. Digestion of food.
Chemical change
State change
No change
Physical change
(iii)
. Cutting of a log of wood into pieces.
No change
Physical change
Chemical change
State change
(iv)
. Burning of crackers.
No change
State change
Physical change
Chemical change
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